import requests

def gethtmltext(url):
    try:
        r = requests.get(url,timeout=30)
        r.raise_for_status()
        r.encoding=r.apparent_encoding
        return r.text
    except:
        return "产生异常"

if __name__ == "__main__":
    url = "https://www.baidu.com/"
    print (gethtmltext(url))
    print("hello")